Ian Hickson. <a href="http://www.w3.org/TR/2003/WD-css3-content-20030514"><cite>CSS3 Generated and Replaced Content Module.</cite></a> 14 May 2003. W3C Working Draft. (Work in progress.) URL: <a href="http://www.w3.org/TR/2003/WD-css3-content-20030514">http://www.w3.org/TR/2003/WD-css3-content-20030514</a>